[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

src/dask_awkward/lib/optimize.py

@@ -23,7 +23,7 @@
 from dask_awkward.utils import first
 
 if _dask_uses_tasks:
-    from dask.blockwise import GraphNode, Task, TaskRef 
+    from dask.blockwise import GraphNode, Task, TaskRef
 
 if TYPE_CHECKING:
     from awkward._nplikes.typetracer import TypeTracerReport